On episode #15 of the podcast This Week in Microbiology, Vincent, Michael and Jo review the number of species on Earth, evidence that the 2010 Haitian cholera outbreak originated in Nepal, and how the gut microbiota influences the immune response to influenza virus infection of the lung.

On episode #12 of the podcast This Week in Microbiology, Vincent, Margaret, Michael and Elio review the use of photothermal nanoblades to dissect the Burkholderia intracellular life cycle, and manipulation of chromosomes in vivo for genome-wide codon replacement in E. coli.

On episode #11 of the podcast This Week in Microbiology, Vincent, Margaret, Michael and Elio review the presence of extended spectrum beta-lactamase genes in chicken meat and in humans, and a beneficial effect of Helicobacter pylori colonization on the development of allergen-induced asthma.

On episode #10 of the podcast This Week in Microbiology, Vincent, Margaret, Elio, Michael and Dickson discuss the symbiosis between the Hawaiian bobtail squid and the luminous, gram-negative bacterium Vibrio fischeri.

On episode #9 of the podcast This Week in Microbiology, Vincent, Cliff, Elio, and Michael review the outbreak of bloody diarrhea and hemolytic uremic syndrome in Germany caused by Shiga toxin-producing beansproutsEscherichia coli O104:H4.

Vincent, Michael, and Stanley recorded episode #8 of the podcast This Week in Microbiology live at the 2011 ASM General Meeting in New Orleans, with guests Andreas Ba├╝mler, Nicole Dubilier, and Paul Rainey. They spoke about how pathogens benefit from disease, symbioses between chemosynthetic bacteria and marine invertebrates, and repetitive sequences in bacteria.

On episode #7 of the podcast This Week in Microbiology, Vincent, Cliff, Elio, Margaret, and Michael discuss programmed cell death in E. coli, and the daily synthesis and degradation of enzymes needed for photosynthesis and nitrogen fixation by cyanobacteria.